Thread-parting mechanism for looms.



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E. GUNMWJ v THREAD PARTING MECHANISM FOB LOOMS.v AQPIIL'IUAJIIO N` FILEDDEO. 1, 1910.

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illllTEl STATES PATENT OFFICE.

EBll/'r'ltl CUNNIFF, OF EW BEDFORD, MASSACHUSETTS, ASSIGNOR TO DRAPERCOM- PANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

v THREAD-PARTING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented May 9, 1911.

Application tiled December 1, 1910. Serial No.'595,062.

.in connection with the accompanying draw-l ing, is a specification,like characters on the drawing representing like parts..

Automatic tilling-replenishing looms of i the feeler type are usuallyprovided with means to cut the old filling between the cloth and theshuttle when illing replenishment is effected, the shuttle-feeler beingrelied upon to prevent replenishment if the shuttle is improperly boxed,mechanism of this character being shown in various patents,

as for instance in United States Patent No..

683,423 granted to Draper September '24, 1901.

The thread partei' is actuated by engage- 25 lay, andl it will beunderstood that if by chance the lling is cut when there is no operationof the replenishing mechanism there will be at least two empty picks inthe cloth being woven, and while mechanism of the class above notedusually operates satisfactorily and properly there are times when inpractice the filling is cut though there is no filling replenishment. Toproperly understand such faulty action it is necessary to brieflyexplain the sequence'of operations which causes the same, it beingunderstood that the thread parter is carried by the shuttle-feeler andthat the movement t ereof to operative position permits the positioningof 'the' dog of the transferring mechanism in the path of the bunter onthe lay. If the shuttle is properly boxed the shuttle-feeler completesits rearward movement and the dog is engaged by the bunter on theadvancing lay, to effect filling replenishment in wellknown manner,while the thread parter yis also operated to cut the old filling. 0n theother hand, if the'improperly boxed shuttle is hit squarely by theshuttle-'feeler not only is the thread ,parter prevented from actingupon the iilling but the dog is depressed so that it strikes theinclined face of the bunter and slides downward thereover, and cannotoperate the transferring device.y When, however,

the shuttle is but slightly misplaced, leaving its tapered end in thepath of the feeler the latter will hit the exposed part of the shuttleand will be arrested sufficiently to depress the dog and prevent changeof illin but after so acting the feelerwill often sli e ofi' from orpast the point of the shuttle, and the advancing lay is'enabled toeffect a partial operation of the thread parter, enough to grasp but notcut the old thread. of filling. Thereafter', as the shuttle-feelerreturns to its normal position, drawing forward the filling, the settingpin on the movable parting blade will strike the setting cam in suchmanner that the blade will be completely closed, parting the filling,whereas the true function of the setting cam is to open or set intooperative position the blades of the thread partei'. It will now beunderstood how the thread parting mechanism can at times part thefilling when no fresh `filling supply has been inserted in the workingshuttle. y v

My present invention,` one practical embodiment of which is described'herein, has for its principal object the production of' a thread partingmechanism of the general type before referred to but soV constructedapplied thereto, the parts heilig showninv normal position; Fig? is anenlarged detail in side elevation of a portion of the thread partingdeviccs,wto be referred to; Fig. 3 is an enlarged detail, viewed fromthe righthand side of the loom, of the dog 1n engagement with the bunterafter initial depression of the said dog, to show the novel constructionof the bunter and the operation thereof; Fig. 4 is a detail in frontelevation` of the bunter shown in Fig. 3; Fig. 5 is a vertical sectionthereof onthe line 5 5,y

and arranged that lthe parting of the old,

detachable iiig. 4; Fig, 6 is a perspective view of the bunter cap,removed from the bunter.

Referring to Fig. 1 the lay A, fillingeeder F, transferrer f iilcrumed.at and having a downturned arm, f3 on which is pivoted at j* the notcheddog m", and the controlling rock-shaft d for the replenishing mechanism;the shuttle-feelin' Y', formed b the rearwardly-bent upper end of theerm the latter mounted to rock on the steile, the arm d fast on therock-shaft d and bearing on the'pin 30 on said arm if, and the spring Sto normally maintain said :arm and thepart's carried thereby, and thedog mfg-in ino rative position, may be and are all substau ially ad inthe Draper patent 'referred to. 'I

Herein I have shown the yfinger n', (which `L fast on the arm Y) asprovided with a cam 'slotmz forl the'stud m* on the dog. 4to

control positively the position of the latter y by or .through themovement of the same arm, and also toenable depression of the f dog toeffect retractive movement of the patent, and which is well known tothose.

shuttle-feder, instead ofl using the cam-like or. curved finger n shownVin the Draper rearward.- The closing ot the blades is effe'cted byengagement of the heel c with a .blade-c losing projection 02 fixedlymounted on the lay, and if the yclosing operation properly completed thepin c will slide over the top ofthe setting cani es and temporarily-depresS it as the shuttlc-feeler returns to normal position.

The thread-catcher,

the Draper patent.

In' accordance with my'prcseiit invention the bunter for thetransferring mechanism isinade as a laterally extended and inclinedpai-til of the upturned end of a bracket 2 in practice bolted to thelay, the front face 3 of thfbiintei being inclined downward andreafirwardandits upper face is beveled at. et,

(iO/'providing aiVfshaped edge` to coperatc with' the usual vnotch m inthe end of the tiogmX when iilling replenishment is to be effected. Thebunter is cut away at its top to leave a clearance 5 between it and anL-shaped cap G, shown separately in Fig. 6,

arm E, the

denoted as a-whole at C," Figs. 1 and 2, forms no part of this iii--ve'ntion and is fully shown and. described in 'the fulci'um fx.

- the protuberance tixedly held in place on thc bracket end and bunterby screws 7, 8, the overhanging part oi" thc cap having a spring-seat orsocket 9 therein. w l

The blade actuator 02 can be made as a part of the bunter bracket Q, asshown in F ig. 1.

The bunter l has a rectangular opening 10 in which is mounted an impactmember 11, notcliedat Iits lower end at 12, Fig. '3, to embrace theadjacent part of the bunter below the o ening 10 and having at its upperend a lip 13 to engage the upper face of the bunter adjacent thereto. Asprin 14 'interposed between the capG and sai impact member normallymaintains the lat- 'ter seated.' as shown in Figs. 3, 4 and 5,

with a convex protuberance 16 thereon projecting beyond the bunter face3, said protuberance being a short distance below the edge formed by thefacesV 3, 4 of the bunter. The spring 14 is seated in the socket I9 andin an opposite socket 17 in the impact nicmber 11,' so that the latteris yicldingly retained in normal position, but pressure upon theprojecting part 16 will cause the impact member to be moved bodilyrearward from the face 3 of the bunter into the clearance 5. This convexprotuberance 16 is positioned opposite the path of movement of thenotched end of the dog m* when the latter is swung on its fulcrum fx.When the dog is moved intt position to be properly engaged bv the upper,lateral edge of the bunter filling replenishment will bc eil'ccted, asusual, and at such time the impact inciiiber 11 is inert and has nofunction to perform. If, however, the shuttle-fcelcr cngages any part ofthe shuttle projecting from the mouth of the shuttlc-box the forwardmovement of the lay acts through the shuttle-'teclcr and the linger n.tov depress 'the dog in* so that its notch m cannot be cntcrcd'bytlieupper edge of the bunter, andl there will be no clizinge of filling.This condition of the parts is clearly shown in Fig.

3, the end of the dog above its notch abutting against thc protuberance16, and as the lay is still moving forward the convex face ot' saidprotuberance acts as a cani to accelerate the downward movement of saiddog about That is, the cam action of upon the dog is more rapid thanwould be the case if the depressing action were duo only to the inclinedface 3 of theV bunter, and such accelerated motion of the dog actsthrough the linger n. to quickly retract thc sliuttle-feeler away fromthe still advancing lay. Such retraction moves the heel c frontward sothat thc act tuator 020 cannot engage it, hence no closing movement canbe exerted upon the blade c", and there is no possibility of the oldthread -of lling being caught or grasped between the parting blades.Furthermore, the setiio 'will bring the dog temporarily under the takesup the Wear tion,

control 0f the ,accelerator or prot-uberance 16, to operate asdescribed. As soon as the accelerator has performed its stated funcFwhichi'of course is instantaneous, the spring 14 yields as the laycompletes its forward beat and permits the end ot the dog to slide downthe front of the bunter before the usual transferrer spring will yield,the spring 14 temporarily h ol'dthe operative position accelerator 16 inits The accelerator also dog' when filling replenishment ispreventH ed,and thereby prevents the face ot the bunter from becoming worn andhollowed out by frequent engagement with the dog'.

It will be iinderstood from' the foregoing; descriptionthat the initialresult of engage ment of the shuttle-eeler with the 1mprop` erly boxedshuttle is to arrestI and then push forward the sliuttle-teeler, causingthe inger n 'to depress the dog from operative position and preventingtilling replenish ment, the dogr coming into engagement with theaccelerator. As the lay is still moving forward, the acceleratorcontinues the depression of the dog but with increased speed, and thedog now acts through the linger n.' to effect a further and rapidretraction of the shuttle-feder. This latter retraction moves the heel.f/ for-ward too quickly for the actuator .120 on the lay to catch upwith it before the setting` pin c has passed th'e criticald point at ornear the rear end of the yielding setting cam e8.. A sl the partingblades cannot. there-fore, be closed partly or completely it followsthat the old 'llling thread cannot be caueflit between tliern, nor cut,when tillingreplenishment is prevented. In other words, if theimproper-positioning ot the shuttle is detected by the shuttle-fceler,and the operation of the i'eplenishing mechanism is thereby prevented.it is impossible to etfect the operation of the thread. partei'.

Changes or modifications in 'de i ils ot' construction and arrangementmay'ibe made by those skilled in tlieart Without departing from thespirit and scope of my Ainvention as set forth in the claims hereuntoannexed. Having fully described my invention, what l claim as new anddesire to secure by Let-ters Patent is:

v l. In a loom having filling replenishing mechanism and controllingmeans therefor,

only having sufficientstrength toA due to the impact. of the including abunter and a `dog to cooperate therewith, a shuttle-feeler and .athreadl partei' thereon to part the old filling. a lay, an actuatorthereon for the thread partciya controlling connection'betwcen thevshuttlefeeler and dog and normally adapted to position the latter jforcooperation with the bunter when filling replenishn'ient 'is called for,engagement ot' the shuttle-feeler with the shuttle when improperly hoxcdacting tl'irough the controlling connection to'move the dog fromoperative position, and means to continuesuch movement of the doar ataccelerated speed, the accelerated movement of the dog acting throughthe controlling connection toretiact the shuttle-tcelexi and therebyprevent operation of the thread partei' by its actuator.

2. In a loom having filling' i'eplcnishing 'mechanism and controllingj-`means thcrefv for, including a hunter and adogir tol copcrate therewith,a shuttle-techn' and ii thread partei' thereon to part the old lillinfr,a lay, an actuator thereon toi' the thread partei', a controlling*connection between the shuttleiecler and dosir and normally adapted toposition the .-lat'tei' toi' eoipci'ation with the bunter when fillin, rreplenishment is called for, engagement ofthe shuttle-teder with theshuttle when improperly boxed act-ing through ,the-controllingcoiinection to move tbe dog: from operative position, and a device onthe bunter to engage and continue such' movement of the dog ataccelerated speed, the accelerated movement of the dog' acting throughthe controlling connection to retract the shuttle-feeler and therebyprcyent eoipei'ation ot the thread parler and its actuator.

3. In a loom having Aillinrg i'eplen'ishing nechanism and controlling'means therefor. including; a bunter and a dog to cooperate therewith, asliuttle-feeler and a thread partei' thereon to part the old yfilling. alav. an actuator thereon for the thread partei, a controllingconnectionbetween the shuttleteeler and dog and normally adapted to p0- sition thelatter for coperation with the bunter whenV fillingf replenishmentis-'called tor, engagement oi the shuttle-teeler with the shuttle whenimproperly boxed actinfrb through the controlling connection to move thedoof from operative position, and aide vice yieldiiigly mounted on thehunter to temporarily engage and continue such movement ot the dog` 'atVaccelerated speed, to A retract the shuttle-teeler and thercbv prevent.coiperation of the thread partei' and its actuator, said devicethereafter yielding to permit the disengagement. ot the doe' therefrom.l: 4. A n automatic filling' replenishingv loom in which the filling isreplenished before complete exhaustion. having in combination, a threadparter :for the old filling, a swinging shuttle-feder on which it ismounted, a lay, an actuator thereon for the thread partei', means,including a bunter on-t-he lay and a dog to coperate therewith, toeffect t-he operation of the replenisliing mechanism, a controllingconnection between said Shuttleleeler and dog to operatively positionthe -latter when filling replenishment is called for and the shuttle isproperly boxed, en-

gageinent ofsaidA feeler with the shuttle it' l the advancing lay.

Iimproperly boxed when tilling 5. An automatic filling replenisliingloom, having, in combinatioma shuttle-feeler movable automaticallyinto'iIling position when replenishment is called for, a thread partei'mounted on the feeler'hand moved thereby into operative position whenthe shuttle is .boxed properly, an actuator for the thread partei',mounted on the lay, means including a dog, to etfecttlie operation ofthe replei'iishing mechanism, a controlling.;` connection betweenthesliuttle-feeler and the dog to operatively position the latter if'theshuttle is properlyboxed, and to prevent such positioning' ot' the dogwhen the shuttle is rcplenishment 'is called for, and separate means tocooperate with the dog when the shuttle, is improperly boxed, and impartan additional movement to the dog away from operative position, suchmovement acting through the controlling connection to positively.retract the shuttle-feeler and thereby withhold the thread partei'-from cooperation with its actuator.

`(l. ln aloom, in combination, mechanism to replenish automatically therunning shuttle with filling, means including a bunter onthe lay and adog, to etlect the operation ot said mechanism, a shiittle-eeler tocause coperation ot the dog and bunter when the shuttle is'properlyboxed and to prevent such the old iillingr.

eeneee ated movement of the dog;V acting through the controllingVconnection to effect a quick retraction of the feeler and thread partingdevice thereon, to prevent cooperation of the latter with its actuator,.thedevice on the bunter yielding to permit disengagement of the dop,`after the completion of its accelerated movement.

7. lin a loom, havin;r filling replcnishing mechanism and controllingmeans therefor, includingl an apertui'ed limiter on the lay and a dog tocooperate with said bunter, a shut* tlc-techn' and a thread partei'thereon to part an actuator for the thread partei', a tzouti'olliingconnection latwcenlhe slnittle-feeler and dog, and normally adapted toposition the latter. lioi c i\niation with the bunter when filling'rel'ilenishnient is called tor, engagement of the shuttle-feder with,the .shuttle when iml'n'operly boxed acting' through the eonti'ollinplrconnection `to move the dog 1from operative position, an impactmen'ibei' yieldiup'ly.mounted in the aperture of the feelcr, and havinga cam-like protulwrancc normally projecting` beyond the tace of thebunter, lsaid protuberaiu'e acting' upon the dog after its movement`from opei'alive position by the shuttle-feoler, and temporarilycontinuing` such movement at accelerated speed, to act upon theshuttle.- teeler through the controlling connection, and thereby retractthe thread parterfi'om cooperation with its actuator.4

ln testimony whereof, I have signed my name to this specification, inthe presence of two subscribinit;` witnesses.

` l'lDlVARD CUNNIFF. Wit liessen:

llonnn'r E. hilains, l). l). Oscoop.

